1
Iuchi Kazushi C O Canon Kabush, Takai Hideyuki C O Canon Kabus, Miyazaki Hajime C O Canon Kabu, Yamazaki Itaru C O Canon Kabus: Oxytitanium phthalocyanine, process for producing same and electrophotosensitive member using same.. Canon, January 23, 1991: EP0409737-A1 (22 worldwide citation)

Oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2 theta +/- 0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuK alpha characteristic X-rays. The oxytitanium phthalocyanine crystal pr ...


2
Takai Hideyuki C O Canon Kabus, Suzuki Koichi C O Canon Kabush, Sugiyama Satomi C O Canon Kabu, Kunieda Mitsuhiro C O Canon Ka: Electrophotographic photosensitive member, electrophotographic apparatus including same and electrophotographic apparatus unit.. Canon, June 21, 1995: EP0658814-A2 (12 worldwide citation)

An electrophotographic photosensitive member is constituted by disposing a photosensitive layer on a support. The photosensitive layer contains oxytitanium phthalocyanine and a specific disazo pigment of the formula (I) or (II) each characterized by having particular coupler residues. The photosensi ...


3
Sakai Junichi, Hiro Masaaki, Takai Hideyuki, Danjo Keishi, Endo Makiko: Colored fine resin particles and inks containing these for ink-jet recording. Canon, January 2, 2003: EP1270681-A2 (10 worldwide citation)

The invention provides colored fine resin particles useful as coloring materials for inks which can provide images having good water fastness, weather fastness and rub-off resistance and are excellent in dispersion stability, and a production process thereof. The colored fine resin particles have a ...


4
Tanaka Masato, Takai Hideyuki: Electrophotographic photo-receptor, process cartridge, and electrophotographic apparatus. Canon, April 11, 2000: JP2000-105479 (8 worldwide citation)

PROBLEM TO BE SOLVED: To provide the electrophotographic photoreceptor superior in sensitivity characteristics and small in light memory and good in repetition characteristics in the semiconductor wave-length region of 380-500 nm.SOLUTION: The electrophotographic photoreceptor is irradiated with sem ...


5
Takai Hideyuki, Tanaka Masato, Tanabe Miki: Electrophotographic photoreceptor, process cartridge and electrophotographic device. Canon, April 11, 2000: JP2000-105478 (7 worldwide citation)

PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor having high sensitivity characteristics even in the wavelength region of 380 to 500 nm, small photomemory and small potential changes by repeated use, and to provide a process cartridge and electrophotographic device from which a ...


6
Takai Hideyuki: Epoxidized polyene, epoxy resin composition and product of curing thereof, and powder coating material. Daicel Chem, June 3, 1998: EP0845486-A1 (6 worldwide citation)

The first invention relates to an epoxidized polyene having either epoxy groups alone or both epoxy groups and hydroxyl groups, characterized in that in the H-NMR spectrum, the sum of integrated values of signals within the range of 1-6 ppm that are assignable to hydrogen atoms on the carbon atoms t ...


7
Takai Hideyuki: Liquid epoxy resin composition and use thereof. Daicel Chem, November 27, 2002: JP2002-338659 (6 worldwide citation)

PROBLEM TO BE SOLVED: To provide an epoxy resin composition for sealing photosemiconductors which gives a cured product excellent in wet heat resistance and transparency.SOLUTION: The epoxy resin composition comprises 110-160 pts.wt. of a liquid acid anhydride curing agent (C) and 3-7 pts.wt. of a c ...


8
Takai Hideyuki: Process for producing epoxidized organic polymer, thermoplastic resin composition, primer composition, unvulcanized rubber composition, rubber moldings, and process for procucing the moldings. Daicel Chem, December 3, 1997: EP0810237-A1 (5 worldwide citation)

The first invention provides a process for preparing an epoxidized organic polymer by dispersing or suspending a solid organic polymer in an organic solvent and epoxidizing the dispersed or suspended polymer with a peroxide. The epoxidized polymer thus obtained is usable for coating materials, resin ...


9
Yamazaki Itaru, Takai Hideyuki, Miyazaki Hajime, Kanemaru Tetsuro, Iuchi Kazushi: Process for producing crystalline oxytitanium phthalocyanine.. Canon, April 29, 1992: EP0482922-A1 (5 worldwide citation)

A process for producing crystalline oxytitanium phthalocyanine showing strong peaks in CuK alpha characteristic X-ray diffraction at Bragg angles 2 theta +/-0.2 DEG of 9.0 DEG , 14.2 DEG , 23.9 DEG , and 27.1 DEG , which comprises a dispersion treatment of the aqueous paste of oxytitanium phthalocya ...


10
Maeda Tatsuo, Takai Hideyuki, Tanaka Masato: Electrophotographic photoreceptor, process cartridge and electrophotographic device. Canon, February 18, 2000: JP2000-047408 (5 worldwide citation)

PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor having a high sensitivity characteristic even in a specific wavelength area by using a specific polycyclic quinone pigment or a specific perylene pigment as a charge generating material used for the electrophotographic photorecept ...